A unified user interface system across all popular mobile device platforms, built on the rock-solid jQuery and jQuery UI foundation. Its lightweight code is built with progressive enhancement, and has a flexible, easily themeable design.

Overall the quality of jQuery Mobile has been greatly improved. In general, the following improvements have been doing since Alpha 2:

The team made about 480 commits!

Fixed around 150 bugs

Created 240 unit tests (almost all are passing in most browsers)

Refactored and improved our core and navigation plugins in many ways, and improved consistency across plugin APIs

Increased our A-Grade browser support to include Firefox Mobile (Fennec), Opera Mobile / Mini, and refined our support for iOS, Android, BlackBerry 6, Palm WebOS, and most modern desktop browsers

Wrapped the jQuery UI datepicker plugin with a touch optimized theme (it’s not included in our build by default)

Fixed our “fixed” toolbars – Thanks Kin!

Improved keyboard and general accessibility support on VoiceOver

Gotten very close to a-grade support for Windows Phone 7 and Nokia (in branches currently)

Made headway on several feature branches, like history.pushState support (for hash-free URLs), and simulated scrolling